21431414162 has 4 divisors (see below), whose sum is σ = 32147121246. Its totient is φ = 10715707080.

The previous prime is 21431414161. The next prime is 21431414189. The reversal of 21431414162 is 26141413412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17755296001 + 3676118161 = 133249^2 + 60631^2 .

It is not an unprimeable number, because it can be changed into a prime (21431414161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5357853539 + ... + 5357853542.

Almost surely, 2^21431414162 is an apocalyptic number.

21431414162 is a deficient number, since it is larger than the sum of its proper divisors (10715707084).

21431414162 is a wasteful number, since it uses less digits than its factorization.

21431414162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10715707083.

The product of its digits is 4608, while the sum is 29.

Adding to 21431414162 its reverse (26141413412), we get a palindrome (47572827574).

The spelling of 21431414162 in words is "twenty-one billion, four hundred thirty-one million, four hundred fourteen thousand, one hundred sixty-two".